Protecting-sheet.



E. C. WALLACE.

PROTECTING SHEET. APPLICATION FILED MAY 3, 1911.

1,107,732. Patented Aug.18,1914.

I avwcwfoz wm wzlw 1 TED STATES PATENT OFFICE.

EDWIN C. WALLAGE, OF EAST AUBURN, CALIFORNIA.

PROTECTING-SHEET.

Application filed May 3, 1911. Serial No. 624,867.

To all whom it may concern:

Be it known that I, EDWIN C. WALLACE, citizen of the United States, residing at East Auburn, in the county of Placer and State of California, have invented certain new and useful Improvements in Protecting-Sheets, of which the following is a specification.

My invention relates to a process of waterproofing a normally non-waterproof porous body, and to the product obtained by the practice of the process.

Broadly, my invention consists in taking a normally non-waterproof porous body, formed of concrete or wood or the like, also cloth or roofing felt, and first subjecting it to the action of a preferably waterproofing liquid adapted to enter the pores of the body by capillary action, and subsequently applying to the body thus treated a waterproofing material, normally incapable of entering the pores of the body, but properly entering said pores in the presence of the previously applied liquid, by the process of diffusion, caused by the same being partly or wholly dissolved by the previously applied liquid.

Specifically, over a surface of oil treated material is applied a heavy .viscous mixture of hydrocarbons which may be of an oily, Waxy or bituminous nature. Under normal conditions this heavy viscous material is practically devoid of penetrating qualities but when coated over the mobile oil treated surface permeates and penetrates the mass by the process of diffusion. It should be explained that the heavy viscous materials are all mixtures of hydrocarbons which by the process of diffusion are partially separated, the more difiusive constituents enetrate farther into the mass, while the lieavier less difl'usive constituents are retained in the outer interstices or pores of the mass, clogging them and forming an effective protective coating. Under certain conditions it may be advisable to cover this by a non-adhesive material to prevent the protective coating from adhering to any thing which may come into contact with it.

In the accompanying drawing the figure is a transverse sectional view of the product such as may be used upon railway ties. As illustrated in the drawing, the foundation or body is indicated by the reference numeral 1. This body may be wood,1con- 'crete, or any other substance or material.

Upon the surface of this body is applied a coating of light penetrating hydro-carbon oil, indicated at 2. This oil enters into the grain or interstices of the body 1 and forms a bonding agent for the water-proofing surface, indicated at This surface 3 is a heavy viscous composition of hydrocarbons including more or less asphalt which under normal conditions possesses little or no penetratin qualities, but is of such nature as to be e ectively waterproof. This coating of heavy viscous composition of hydrocarbons 3 is partially dissolved by the light oil 2, and consequently the portions so dissolved follow the light oil into the grain or interstices of the body and constitute means whereby the said coating 3 tenaciouslv clings o the body 1.

In some instances, it is desirable to provide the coating 3 with non-adhesive protecting material, and for railway ties may consist of sand, stone-screenings, plaster, or earthy matter, but when applied to walls, floors, or, other bodies may be made of any material consonant with the purpose. In the drawing this material is indicated at 4.

By applying the mobile oil to a surface having voids and allowing the oil to enter the voids or pores of the body and then applying a viscous material or oil of bituminous nature the latter pernlcates the body by diffusion and fills the voids or pores even though the entrances to the voids or pores are of less diameter than the major portions of the said voids or pores. Thus the fusible element is anchored in position in the voids or pores of the surface of the body.

Having thus described the invention, what is claimed as new is:

1. The herein described process of waterproofing a non-waterproof porous body, which consists in first impregnating the pores thereof with a waterproof liquid adapted to readily enter said pores by capillary action, and subsequently applying a viscous waterproofing substance normally incapable of entering said pores and soluble in said liquid, to said body, in the presence 'of said liquid for the purpose of causing the viscous substance to dissolve in said liquid and enter the pores of the body by the process of difl'usion.

2. The herein described process of waterproofing a non-waterproof porous body, which consists in first and separately applying to the said body a waterproofing liquid mow/ea adapted to readily enter the pores of the said pores in the presence of the light oil by body by capillary action and subsequently the process of diffusion.

and separately applying to said body a fluid 4E. llhe herein described process of Water- Waterproofing substance incapable alone of proofing a non-waterproor porous body,

entering said pores and soluble in said which consists in first impregnating the liquid, in the presence of said liquid for the pores of the body with a li'ght Waterproofing purpose of causing the Waterproofing fluid liquid adapted to 'hteimthe pores by capilto dissolve in the Waterproofing liquid lary action, and subsequently applying already contained Within the pores of the Without pressure a heavy Waterproofing body, by the process oi difi'usion. fluid to the porous body to contact with the I 3. The herein described process of Waterouter portion of the light liquid impregnatproofing a non waterproof porous concrete ing the pores of the body, to be led thereby body, Which consists in first applying to the by the process of difiusion into said pores.

porous concrete body a light Waterproofing In testimony whereof ll aflix my signature oil adapted to readily enter said. pores by in presence of two witnesses.

capillary action and subsequently applying to the porous bridy thus treated a heavy vis- EDWIN WALLACE cous Waterproofing oil, which is soluble in l/Vitnesses:

the light oil and normally incapable of en H. Panniers,

tering the pores of the body but entering E, E. KELLY. 

